Windows 7 is going to have a new version of Windows Calculator which will have up to 4 modes, unlike the current one which only has 2 modes. These modes are Standard, Scientific, Programmer, and Statistics.

This calculator has also been included in Windows 7 M3 Pre-Beta, and guess what? You can download it for Windows Vista too! Use the following link to download it.

There is no need to install this. Simple unrar the compressed file, and run the calculator by its EXE file. You can also replace the current Vista calculator with the new Windows 7 one. Follow the steps below to do it: